217435880

素因数分解:

$2^3\times 5^1\times {\mathrm{5435897}}^1$

素因数の和:5435908

約数の個数: 16

約数和(自身を含む): 489230820

約数和(自身を除く): 271794940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5435897, 10871794, 21743588, 27179485, 43487176, 54358970, 108717940, 217435880]

約数ペア:

[(1, 217435880), (2, 108717940), (4, 54358970), (5, 43487176), (8, 27179485), (10, 21743588), (20, 10871794), (40, 5435897)]